grammar.pronouns.subject
Subject pronouns: yo, tú, vos, él...
Yo, tú/vos, él/ella/usted, nosotros/as, vosotros/as, ellos/ellas/ustedes. Usted takes third-person verb forms despite meaning 'you'.
grammarA1v0.1.0
Explication
The full set: yo, tú (and vos in voseo regions), él, ella, usted, nosotros/nosotras, vosotros/vosotras (Spain only), ellos, ellas, ustedes. Usted and ustedes are grammatically third person: usted habla, ustedes hablan.
In Latin America, ustedes is the only 'you all' — informal or formal. Nosotras/vosotras/ellas mark all-female groups.
Exemples
Usted tiene razón.
You (formal) are right.
You (formal) are right.
Région: global
Nosotras llegamos primero.
We (women) arrived first.
We (women) arrived first.
Région: global